1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd89b9736770ab4b7e6f38c66b493589674107027cc05ebbb74ac404d6c75ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5d1e0b3-9e7b-4a1a-badb-bbedff6691cc.json and https://artists.proofprofile.net/proofs/artist/b5d1e0b3-9e7b-4a1a-badb-bbedff6691cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4592afde7c63863ed80591e4d9b1eaced7d88b6ea0db20adaac0605cfffa0f69. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2107204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d439df48f571a7731894e627b0485d9614eba1d0f1740dccff34b28d01029b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e0be603e31ed8974382987b42cef228262dfde598b611370998c1b64cabc8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d20f29702cb9d37fa4b9919b72140ea9e711c549b9aa768ebc1ba901bf611c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fcace0f1489840e81a5c8a423d5baf4d4f2e063dbd4267f405b01ff7a8790e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0fca65fcef3558e176c66266704c4c83ce60edeab1e70868427d1e4833e836. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2113597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b2e5fa8669b4f0daa913e7ee0d05328c9ac59e991dee6db0bc2ab0bec8cd0c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2107268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d921be5bfba8240dde4d97aef190e6f8e04087cf9e3c904d528db458187fc5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53eabdd3878241793e207e262757af8af970166f2d1d6c5f73703e509788140. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20f2ed4f2386fead67a4c35ce99800a07ec22f1d49122a428df76471a06a55. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a38ed18a331fe49997f01082b161f0afa80c79cfac728ba9d160471121fb96a. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2107200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25048ccf0799b0bd0fc366ff98f09f26d09a94a9f1685181f868efcb6b898790. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2113649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf33c8a9ee95cb15de083a0779d5573ab61788ff24dfeed74fd1b3efb846df4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2114714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd9d139266195e826fb33e8b6d9bd4ed20b300af8bfcba0d305c6d2eee0bfe9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2107203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300fa95748e503123f1e9404049921d432668ff0d9412d1ebd0d354c2f99bf3d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2107199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c15b9931a994956aca902e07164666793cca4f2007fb82dde58e1a3d3631a3c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2106920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f7656416b471ad0f5ccae8c69a7d3d1f64d17143bdd9b240e0a711fb8e1b8f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2106919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034619aa2278299dbebc4cc6158aa8d9116c72bf7cd7195804d35cee7844395. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2113450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7009846550b0ca9b28a09d7523aff60276ae6ee1156d0d63c709dd6d590899b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2166356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d54500385d45e05de020c923c60ac1e24b5546ac575b1a6d8e24f916a0ce1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2166357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdafe026239828b294b86db9f6b19bfd731ae4cadf472c9ee4a0a585edd556d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2173598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcbc8faf3c2b15738d0e2b5a2022fd38978dfbe668c1ab9d7539b4a6e2092b9. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA2L2191944.